CN111508695B - Wireless charging coil assembly and wireless power transmission device - Google Patents
Wireless charging coil assembly and wireless power transmission device Download PDFInfo
- Publication number
- CN111508695B CN111508695B CN202010617037.4A CN202010617037A CN111508695B CN 111508695 B CN111508695 B CN 111508695B CN 202010617037 A CN202010617037 A CN 202010617037A CN 111508695 B CN111508695 B CN 111508695B
- Authority
- CN
- China
- Prior art keywords
- coil
- receiving
- receiving coil
- wireless power
- transmitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
Abstract
The invention is suitable for the technical field of wireless power transmission, and provides a wireless charging coil assembly and a wireless power transmission device. According to the embodiment of the invention, the coupling effect between the left coil and the right coil of the first receiving coil and the second receiving coil is at least partially offset, so that the interference generated by mutual coupling between the first receiving coil and the second receiving coil can be reduced, and even if the first receiving coil and the second receiving coil are stacked, the influence on respective load power supply can not be generated, thus the distance between a plurality of receiving coils is reduced, the space is saved, and the cost is further reduced.
Description
Technical Field
The invention belongs to the technical field of wireless power transmission, and particularly relates to a wireless charging coil assembly and a wireless power transmission device.
Background
At present, the most extensive way for transmitting electric energy adopted by people is wired electric energy transmission, and the wired electric energy transmission has the advantages of simplicity, economy, low loss, long transmission distance and the like. The wired power transmission technology is mature up to now, is widely applied worldwide, and has the function that other transmission modes cannot be replaced. With the continuous development of science and technology and the continuous compression of human living space, the defects of the traditional wired electric energy transmission mode are gradually exposed, if the electric wire connection is required, the electric wire joint is easy to generate contact sparks, the equipment moving flexibility is poor, the environment is not attractive, and the like, so that the wireless electric energy transmission technology has important application value and wide application prospect in the fields of electric power, household electronic products, military, aerospace, urban electric traffic, industrial robots, industrial and mining enterprise hoisting equipment and transportation equipment, underwater operation, high-rise building lifting elevators, and the like.
Generally, a wireless power transmission device includes a transmitting coil and a receiving coil to supply power to a single load. In a special case, one transmitting coil corresponds to two receiving coils, and wireless power supply is carried out on different loads at the same time.
Since the two receiving coils are coupled with each other to interfere with other loads, a distance between the different receiving coils needs to be kept large enough to reduce interference between the receiving coils, resulting in that the two receiving coils occupy a large space.
Disclosure of Invention
The invention provides a wireless charging coil assembly, and aims to solve the problem that the distance between two receiving coils of an existing wireless power transmission device is too large.
The present invention is thus achieved, providing a wireless charging coil assembly, comprising:
the transmitting coil is a single-loop coil;
the first receiving coil is a single-loop coil;
the second receiving coil is a double-loop coil and comprises a left coil, a right coil and a combination part for connecting the left coil and the right coil;
the first receiving coil is arranged opposite to the combining part;
the left coil or the right coil is arranged opposite to the transmitting coil.
Further, the first receiving coil is arranged symmetrically with the joint portion as a center.
Further, the left coil and the right coil are symmetrically arranged.
Further, the left coil and the right coil are in opposite current directions.
Further, the second receiving coil is shaped like a figure 8 or a Chinese character ri.
Still further, the transmitting coil and the first receiving coil are rectangular or circular.
Still further, the wireless charging coil assembly includes a plurality of sets of receiving coils consisting of a first receiving coil and a second receiving coil.
Further, a plurality of sets of the receiving coil sets are arranged in the same direction.
Still further, the wireless charging coil assembly further comprises a first protective housing and a second protective housing, the transmitting coil is disposed within the first protective housing, and the first receiving coil and the second receiving coil are disposed within the second protective housing.
In addition, the invention also provides a wireless power transmission device, which comprises a transmitting compensation circuit, a first receiving compensation circuit, a second receiving compensation circuit and the wireless charging coil assembly, wherein the transmitting coil is connected with the transmitting compensation circuit, the first receiving coil is connected with the first receiving compensation circuit and then connected with a first load, and the second receiving coil is connected with the second receiving compensation circuit and then connected with a second load.
In the embodiment of the invention, the first receiving coil is set as a single-loop coil, the second receiving coil is set as a double-loop coil, the combination part of the first receiving coil and the second receiving coil is oppositely arranged, one part of the first receiving coil is coupled with the left coil of the second receiving coil, the other part of the first receiving coil is coupled with the right coil of the second receiving coil, and the coupling action between the left coil and the right coil of the first receiving coil and the second receiving coil is at least partially offset, so that the wireless power transmission device using the wireless charging coil assembly can reduce the interference between the first receiving coil and the second receiving coil caused by mutual coupling when in operation, thus, even if the first receiving coil and the second receiving coil are stacked, the power supply of respective loads can not be influenced, the distance between a plurality of receiving coils is reduced, and two receiving coils can be accommodated in a smaller space range, the space is saved, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a wireless power transmission apparatus provided in the present invention;
fig. 2 is a schematic structural view of a wireless charging coil assembly corresponding to the wireless power transmission apparatus of fig. 1;
figure 3 is a schematic diagram of a portion of the structure of the wireless charging coil assembly of figure 2;
FIG. 4 is an exploded view of FIG. 3;
figure 5 is a schematic diagram of the arrangement of the wireless charging coil assembly;
figure 6 is another schematic layout of a wireless charging coil assembly.
The reference numbers in the specification are as follows:
10. a transmitting coil; 20. a receiving coil set; 21. a first receiving coil; 22. a second receiving coil; 221. a left coil; 222. a right coil; 223. a bonding section; 30. a transmitting magnetic core; 40. receiving a magnetic core; 300. a first protective housing; 400. a second protective housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a wireless charging coil assembly which comprises a transmitting coil, a first receiving coil and a second receiving coil. The transmitting coil is a single-loop coil, the first receiving coil is a single-loop coil, the second receiving coil is a double-loop coil, and the transmitting coil comprises a left coil, a right coil and a combination part for connecting the left coil and the right coil. The first receiving coil is arranged opposite to the combining part, and the left coil or the right coil is arranged opposite to the transmitting coil.
Because the second receiving coil is a double-loop coil, the combination part of the first receiving coil and the second receiving coil is oppositely arranged, one part of the first receiving coil is coupled with the left coil of the second receiving coil, the other part of the first receiving coil is coupled with the right coil of the second receiving coil, the coupling action between the left coil and the right coil of the first receiving coil and the second receiving coil is at least partially offset, in this way, the wireless power transmission device using the wireless charging coil assembly can reduce interference between the first receiving coil and the second receiving coil due to mutual coupling, and thus, even if the first receiving coil and the second receiving coil are stacked, the power supply of the respective loads is not affected, therefore, the distance between the receiving coils is reduced, the two receiving coils can be accommodated in a smaller space range, the space is saved, and the cost is reduced.
Example one
As shown in fig. 1 to 4, the present invention provides a wireless power transmission device and a wireless charging coil assembly thereof, wherein the wireless charging coil assembly comprises a transmitting coil 10, a first receiving coil 21 and a second receiving coil 22. The transmitting coil 10 is a single-loop coil, the first receiving coil 21 is a single-loop coil, the second receiving coil 22 is a double-loop coil, and the second receiving coil 22 includes a left coil 221, a right coil 222, and a connecting portion 223 connecting the left coil 221 and the right coil 222. The first receiving coil 21 is disposed opposite to the coupling portion 223, and the left coil 221 or the right coil 222 is disposed opposite to the transmitting coil 10. Of course, the wireless charging coil assembly further includes a transmitting core 30 corresponding to the transmitting coil 10, and a receiving core 40 corresponding to the first and second receiving coils 21 and 22.
The left coil 221 and the right coil 222 are formed by winding a single or multiple turns of a cable. The left coil 221 or the right coil 222 is disposed opposite to the transmitting coil 10, which means that the left coil 221 or the right coil 222 is opposite to the transmitting coil 10, and at this time, only the left coil 221 or the right coil 222 is coupled to the transmitting coil 10. The first receiving coil 21 is disposed opposite to the coupling portion 223, and in this case, the first receiving coil 21 is coupled to both the left coil 221 and the right coil 222.
The wireless power transmission device further comprises a transmitting compensation circuit, a first receiving compensation circuit and a second receiving compensation circuit, wherein the transmitting coil 10 is connected with the transmitting compensation circuit, the first receiving coil 21 is connected with the first receiving compensation circuit and then connected with a first load, and the second receiving coil 22 is connected with the second receiving compensation circuit and then connected with a second load. The first receiving coil 21 and the second receiving coil 22 are respectively connected with respective receiving compensation circuits, wherein the first receiving coil is connected with the first receiving compensation circuit to supply power to a first load; the second receiving coil is connected with the second receiving compensation circuit and supplies power to the second load. The first reception compensation circuit and the second reception compensation circuit may be of the same type or of different types. Of course, in the present invention, the first receiving coil 21 and the second receiving coil 22 may be connected to the same load to supply power to the same load. The first load and the second load may also be the same load.
After the alternating current with the frequency of 50Hz is input, the alternating current is converted into direct current through AC/DC, then the direct current is converted into high-frequency alternating current with the frequency of kHz level through DC/AC, and the high-frequency alternating current is transmitted to the transmitting coil 10 through the transmitting compensation circuit. The emission compensation circuit comprises a capacitor and an inductance device, and can also be independently formed by the capacitor, so that the system can resonate at a certain frequency. The energy of the transmitting coil 10 is transmitted to the first receiving coil 21 and the second receiving coil 22 via the magnetic field, and is converted into a high-frequency electric field by the first receiving coil 21 and the second receiving coil 22, and the electric energy is transmitted to the respective receiving compensation circuit, which includes a capacitor and an inductor, so that the receiving end resonates at a certain frequency. The AC/DC converts the high-frequency alternating current into direct current to supply power to a load. Particularly, the output of the first receiving coil and the first receiving compensation circuit presents voltage source characteristics and supplies power to the motor; the output of the second receiving coil and the second receiving compensation circuit is current source characteristic and charges the battery.
Since the second receiving coil 22 is a double loop coil, and the joint 223 of the first receiving coil 21 and the second receiving coil 22 is disposed opposite to each other, a portion of the first receiving coil 21 is coupled to the left coil 221 of the second receiving coil 22, and another portion is coupled to the right coil 222 of the second receiving coil 22, and the coupling between the left coil 221 and the right coil 222 of the first receiving coil 21 and the second receiving coil 22 is at least partially cancelled, thus, when the wireless power transmission device using the wireless charging coil assembly is operated, the interference between the first receiving coil 21 and the second receiving coil 22 due to the mutual coupling can be reduced, so that even if the first receiving coil and the second receiving coil are stacked, the power supply to the respective loads is not affected, thereby reducing the distance between the plurality of receiving coils, and accommodating the two receiving coils in a smaller space range, the space is saved, and the cost is reduced.
Example two
In addition to the first embodiment, the first receiving coil 21 in the present embodiment is symmetrically disposed with the coupling portion 223 as the center, the coupling effect between the left coil 221 and the right coil 222 of the first receiving coil 21 and the second receiving coil 22 is completely cancelled, and the coupling coefficient between the first receiving coil 21 and the second receiving coil 22 is approximately 0, so as to reduce the interference between the first receiving coil 21 and the second receiving coil 22 due to the mutual coupling to the maximum extent.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the left coil 221 and the right coil 222 are symmetrically disposed in the present embodiment, so that the coupling effect of the first receiving coil 21 and the left and right coils 221 and 222 is cancelled out as much as possible, so as to further reduce the interference between the first receiving coil 21 and the second receiving coil 22 due to mutual coupling.
Example four
On the basis of any of the above embodiments, the current flow directions of the left coil 221 and the right coil 222 in this embodiment are opposite, so that the coupling effects of the first receiving coil 21, the left coil 221 and the right coil 222 are cancelled out as much as possible, and the coupling coefficient is closer to 0, which is very small and can be substantially ignored, so as to further reduce the interference between the first receiving coil 21 and the second receiving coil 22 due to mutual coupling.
EXAMPLE five
On the basis of any of the above embodiments, the second receiving coil 22 in this embodiment is in an 8-shape or a japanese-character shape, which is regular in shape and convenient to manufacture, and the left coil 221 and the right coil 222 of the second receiving coil 22 are symmetrically disposed, so as to further reduce the interference between the first receiving coil 21 and the second receiving coil 22 due to mutual coupling.
EXAMPLE six
On the basis of any of the above embodiments, the transmitting coil 10 and the first receiving coil 21 in this embodiment are rectangular or circular, and have simple structures, are convenient to manufacture, and can reduce the processing difficulty.
EXAMPLE seven
Referring mainly to fig. 5, on the basis of any of the above embodiments, the wireless charging coil assembly in the present embodiment includes multiple sets of receiving coil sets 20 composed of a first receiving coil 21 and a second receiving coil 22. At this time, the transmitting coil 10 may be provided in a long bar-shaped ring shape. The adjacent receiving coil sets 20 are spaced apart from each other to reduce interference between the adjacent receiving coil sets 20 due to coupling, and the coupling between the first receiving coil 21 and the second receiving coil 22 in each receiving coil set 20 is cancelled out as above. Thus, one transmitting coil 10 can correspond to a plurality of receiving coils at the same time, so as to increase the application range of the wireless transmission device.
Moreover, since the transmitting coil 10 and the first receiving coil 21 are single-loop coils, the transmitting coil 10 and the first receiving coil 21 can be coupled at any position for energy transfer. Meanwhile, since the second receiving coil 22 is a double loop coil, when the transmitting coil 10 is located at any side of the second receiving coil 22, the transmitting coil 10 and the second receiving coil 22 can be coupled for energy transfer.
Further, the plurality of sets of receiving coils 20 are arranged along the same direction to simplify the structure of the transmitting coil 10, so that the same transmitting coil 10 transmits energy to the plurality of sets of receiving coils 20 at the same time. Of course, as shown in fig. 6, the multiple sets of receiving coil sets 20 may be arranged in a staggered manner. The first receiving coils 21 in each receiving coil set 20 may be arranged symmetrically with respect to the coupling portion 223 or asymmetrically.
Of course, the sets of receiving coils 20 may be arranged along an arc or in other shapes, and in this case, the transmitting coil 10 may be configured in an arc ring or in other shapes.
Practice ofEXAMPLE VIII
On the basis of any of the above embodiments, the wireless charging coil assembly in this embodiment further includes a first protective housing 300 and a second protective housing 400, the transmitting coil 10 is disposed in the first protective housing 300, and the first receiving coil 21 and the second receiving coil 22 are disposed in the second protective housing 400, so as to prevent the transmitting coil 10, the first receiving coil 21 and the second receiving coil 22 from being exposed, shield the magnetic field around the transmitting coil 10, the first receiving coil 21 and the second receiving coil 22, and also prevent the external environment from affecting the electric energy transmission.
According to the wireless power transmission device and the wireless charging coil assembly thereof, the second receiving coil is a double-loop coil, the combination part of the first receiving coil and the second receiving coil is arranged oppositely, one part of the first receiving coil is coupled with the left coil of the second receiving coil, the other part of the first receiving coil is coupled with the right coil of the second receiving coil, and the coupling effect between the left coil and the right coil of the first receiving coil and the second receiving coil is at least partially offset. Therefore, when the wireless power transmission device using the wireless charging coil assembly works, the interference generated by mutual coupling between the first receiving coil and the second receiving coil can be reduced, and therefore, even if the first receiving coil and the second receiving coil are stacked, the influence on respective load power supply can not be generated, the distance between the plurality of receiving coils is reduced, the two receiving coils can be accommodated in a smaller space range, the space is saved, and the cost is reduced. Further, the first receiving coil is provided symmetrically about the joint portion, and the left coil and the right coil are provided symmetrically, so that interference between the first receiving coil and the second receiving coil due to coupling can be further reduced. Moreover, the second receiving coil is 8-shaped or B-shaped, the transmitting coil and the first receiving coil are rectangular or circular, the structure of the wireless charging coil assembly can be simplified, and the processing difficulty is reduced. In addition, wireless charging coil subassembly includes the multiunit and receives coil assembly by first receiving coil and second receiving coil constitution, and transmitting coil corresponds a plurality of receiving coil, can increase wireless transmission device's application scope.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A wireless power transmission device is characterized in that the device comprises a transmitting compensation circuit, a first receiving compensation circuit, a second receiving compensation circuit and a wireless charging coil assembly,
the wireless charging coil assembly comprises:
the transmitting coil is a single-loop coil;
the first receiving coil is a single-loop coil;
the second receiving coil is a double-loop coil and comprises a left coil, a right coil and a combination part for connecting the left coil and the right coil;
the first receiving coil is arranged opposite to the combining part, one part of the first receiving coil is coupled with the left coil, and the other part of the first receiving coil is coupled with the right coil;
the left coil or the right coil is arranged opposite to the transmitting coil;
the transmitting coil is connected with the transmitting compensation circuit, the first receiving coil is connected with the first receiving compensation circuit and then connected with a first load, and the second receiving coil is connected with the second receiving compensation circuit and then connected with a second load.
2. The wireless power transmission apparatus according to claim 1, wherein the first receiving coil is disposed symmetrically with respect to the coupling portion.
3. The wireless power transmission apparatus according to claim 1, wherein the left coil and the right coil are symmetrically disposed.
4. The wireless power transfer apparatus of claim 1 wherein the left coil and the right coil are in opposite current directions.
5. The wireless power transmission apparatus according to any one of claims 1 to 4, wherein the second receiving coil has a figure 8 or a figure of the Chinese character.
6. The wireless power transfer apparatus of any one of claims 1-4 wherein the transmitter coil and the first receiver coil are rectangular or circular.
7. The wireless power transfer device of claim 1, wherein the wireless charging coil assembly comprises a plurality of sets of receiving coils consisting of a first receiving coil and a second receiving coil.
8. The wireless power transmission apparatus according to claim 7, wherein a plurality of sets of the receiving coil sets are arranged in the same direction.
9. The wireless power transfer device of claim 1, wherein the wireless charging coil assembly further comprises a first protective housing and a second protective housing, the transmit coil disposed within the first protective housing, the first receive coil and the second receive coil disposed within the second protective housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010617037.4A CN111508695B (en) | 2020-07-01 | 2020-07-01 | Wireless charging coil assembly and wireless power transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010617037.4A CN111508695B (en) | 2020-07-01 | 2020-07-01 | Wireless charging coil assembly and wireless power transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111508695A CN111508695A (en) | 2020-08-07 |
| CN111508695B true CN111508695B (en) | 2020-10-23 |
Family
ID=71872217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010617037.4A Active CN111508695B (en) | 2020-07-01 | 2020-07-01 | Wireless charging coil assembly and wireless power transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111508695B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190199132A1 (en) * | 2012-09-03 | 2019-06-27 | Yuki Ota | Contactless power transmission apparatus and contactless power transmission method |
| US9666357B2 (en) * | 2012-09-11 | 2017-05-30 | Qualcomm Incorporated | Apparatus system, and method for wirelessly receiving power using conductive structures |
| KR101804410B1 (en) * | 2015-12-17 | 2017-12-04 | 엘지이노텍 주식회사 | Transmitting Coil Module For Wireless Power Transmitter |
| KR20190138536A (en) * | 2018-06-05 | 2019-12-13 | 주식회사 히타치엘지 데이터 스토리지 코리아 | Multiple coils for transmitting power wirelessly |
| CN109682292B (en) * | 2018-12-29 | 2021-06-29 | 北京酷能科技有限公司 | Offset detection method and device and wireless charging system |
| CN210837457U (en) * | 2019-11-21 | 2020-06-23 | 中国石油大学(华东) | Wireless charging orthogonal coil structure of electric automobile |
-
2020
- 2020-07-01 CN CN202010617037.4A patent/CN111508695B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111508695A (en) | 2020-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210012959A1 (en) | Coil module, wireless charging transmitting apparatus, receiving apparatus, system, and terminal | |
| CN107359705A (en) | A kind of asymmetric wireless power transmission systems and its electric power distribution | |
| CN104617681B (en) | A kind of multidirectional transmission three-dimensional hollow coil of magnet coupled resonant type wireless electric energy | |
| CN110247463B (en) | Wireless charging system | |
| CN111508695B (en) | Wireless charging coil assembly and wireless power transmission device | |
| CN113675956A (en) | Staggered anti-deviation constant-voltage resonant wireless power transmission system | |
| Li et al. | Application of wireless energy transmission technology in electric vehicles | |
| CN111786467A (en) | Wireless power transmission mechanism and high-voltage power-taking wireless power transmission system | |
| CN113595263B (en) | Magnetic resonance wireless charging system for prolonging transverse coupling distance of transmitting and receiving antenna | |
| CN115065173A (en) | Multi-direction wireless power transmission system | |
| CN212231177U (en) | Wireless power transmission device | |
| CN108270296A (en) | A kind of wireless energy transfer energy supplying system of high-voltage and high-power power electronic device | |
| CN108501743B (en) | Wireless charging device for electric automobile | |
| CN208571720U (en) | A kind of socket arrangement wireless power system | |
| CN217115746U (en) | Wireless charging relay structure adopting magnetic induction and magnetic resonance mixed mode coupling | |
| CN207968088U (en) | A kind of contactless electrical energy transmission system | |
| CN210016331U (en) | Wireless power supply multi-machine receiving system | |
| CN209676014U (en) | Magnetic resonance type radio energy transmit circuit | |
| CN218920066U (en) | Device for improving magnetic induction coupling distance | |
| CN111816425A (en) | Wireless power transmission coil with asymmetric three-rectangular structure and application thereof | |
| CN110635581A (en) | Foldable receiving and transmitting antenna of magnetic resonance coupling wireless power transmission system | |
| CN218005976U (en) | Wireless power transmission system combining electric field and magnetic field | |
| JPH11341712A (en) | Power supply | |
| JP2015220891A (en) | Resonator and wireless power supply system | |
| CN219833850U (en) | Antenna system for wireless power supply of electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |